Pressure filter valve



FIG. 1 is a top plan view of a pressure filter valve, showing my new design.

FIG. 2 is a front view thereof.

FIG. 3 is a perspective view thereof; and,

FIG. 4 is a side view thereof.

The broken lines showing of unclaimed portions form no part of the claimed design. 

The ornamental design for a pressure filter valve, as shown and described. 